Traction device for tires



March 3, 1931. MP. DOUGLASS' TRACT'ION DEVICE FOR TIRES Filed Dec. 14.1929 m A'TToRNEY Patented Maia 3,.-

UNI-TED STATES 1 MAB L r. DOUGLASS, or narnnor, mrssounr rnAorIoivnnvronjroa ings a lication filedDe-cember 14,1929. SeriaI'No 414,039. gI p tened a link 4, Fig. 3, through which is adapt- My invention relatesto improvements'in traction devices for tiresQ It relates particularlyto emergency tractiondevices adapted forapplication to the tires ofauto- 55' mobiles for increasing the wheel traction and to prevent orreduce skidding.

A further object of my'invention is to provide a novel traction devicefor tires which is simple, cheap to make, durable, not likely to get outof order, which is quickly and easily applied to a vehicle Wheel withouthaving to jack up the Wheel, and which is efficient in operation."

The novel features of my invention are.

hereinafterfully describediand claimed.

' In the accompanying drawing, which lustrates my invention, "1

Fig. 1 is areduced' side elevation of an. automobilewheel ofcomnion typeprovided with my improved traction device, having an anchor ring adaptedto encircle a hub'cap. Fig. 2 is an enlarged'central vertical sectionalview of the same. i V

Fig. 3 is an enlarged 'perspective view'of 2 one ofthe strapswithattached springand link.

Fig. 41S a plan viewofthe anchoring ring,

- I ward the spring 6 butvwhich will permit the enlarged.

Fig." 5 is a sectlon on the line 5+5 ofFig is provided with an annularperipheral perforated' flange, which effects the functions of theanchoring ring shownin Fig. 4.,

therethrough a circularrow of holes 2.

For releasable attachment to the ring 1,1

I provide a pluralityof flexible resilient devices, each consisting,refer-ably, of a strap,

' 3, of rubber, rubber fa ric, leather, or other suitable material, toone end of whichis'fas coil spring '6, the other end of which has a 6.isa front elevation 'of a modification of the anchoring means, inwhich thehub cap,

. Fig. 7 is a side 1' vat-ionofthe hub-cap Referring to Figs. to 5, myimprovement ed'to be re'eved the other end portion of the a'ring 5having attached to. it one 'end' of a" 110 1127 adapted to releasablyengagejthe anchoring: ring 1 by being inserted through one'of the holes2thereofj The strap 3 is adapted to'encircle thetijre 8, rim 9,and"felly10 ofsan automobile-wheel, the hub 11- of whichyis encircled by thering. 1,'which is slipped over the hub cap 12L Asshown in Figs. 1'and'2, the' strap 3;.is made to encircle the tire 8,rim9 and felly 10;the spring 6, ring 5 and adjacent end portion of-the strap being reevedthrough theringtbi To the outer side of the strap 3 isattached a block13 of material correspondingto that of the'strap, or'others'uitablelmaterial', said block constituting an abutment, which is" isdrawn tightly agalnst the tire 8, it will engage the adjacent end of thering 4 at the side of the latter next 1 passed through the link 4,-andis so disposed i if N that, when the strap 3 to the hub, as shown inFig. 2, so as to hold the ring 1 from slipping on the strap 3 tospringto'pull the strap towardthe hub to tightenthe strap on the tire. Thehook 7 is then inserted the ringl. I The straps 3 devices are made, inlike manner,"to embrace the "tire 8 at dilferent places respectivelythrough the adjacent. hole 2 of of the other flexible resilient aroundthe circumference of the tire. The 1 of respectively engage the linkshas shown 1 in Figs. 1 and 2.

through the adjacent holes 2 of the anehor- 1 ing ring 1. This completesthe assembling of the traction device upon a wheel/The .straps 3 wherethey cover the tread portion of the tire will elfect the function ofthe, usual tire'chain, if alfording good traction for the wheel onslippery surfaces or in the mud.

Inthe form shown in Figs. 6 and'7, the 'anchoring 'ring is integral withthe hub cap 12,

v i V .90 The hooks 7 are then respectively inserted i 2 a i v 1,794,676

the latter being provided with an annular peripheral flange 14 providedwith a circular row of transverse holes 15 corresponding in function tothe holes 2 of the ring 1, being 5 adapted to respectively receive thehooks 7 of the springs 6, after the straps 3 have been mounted. on thetire as hasibeen already de: scribed, V

The springs 6 are sufficiently strong to hold the straps 3 tightly onthe tire.

I do not limit my inventionto the-strum tures shown and described, asmany modifications, within the scope of the appended claim, may be madewithoutdeparting from the spirit of my invention;

What I claim is:.

A: traction device for tires ,compnising. anchoring means adapted:t'olencircle a Wheel: hnb,. a: strap! adapted to embrace a. tire and.

ri1n,, said strap having on one; side. an: abutment, .awlinkattached toone end of said strap." and adapted to have said strap; and. saidabutment reeved therethrongh, said abutment being; adapted to engage:the side only of the link next tot-he hnbqandlhold Said linlQ frome.

slipping in one direction, but permitting. the strap to-be drawn towardthe. hub to tighten the strap on the tire, andm'eans, including, a coilspring,., attached tothe other: end of said.-

' so: strap andradapt'edlfor insertion through said link, and havingmeans'adapted-tfor releasable attachment to said anchoring meansandnormally drawing saidzstraptoward said hub. V 351 In testimony whereotI: have signed my.

nam'eto. this specification.

. MABEL PLDOUGLASSU H

